Finding the Fourth Proportional to 7,141,372.20, 9,855,063.16 and 3,878,164.08
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Solution
The fourth proportional to 7,141,372.20, 9,855,063.16 and 3,878,164.08 is: 5,351,849.88
Step by Step Solution
- Step 1: Write the proportion equation
7,141,372.20 : 9,855,063.16 = 3,878,164.08 : x - Step 2: Convert to fraction form
7,141,372.20/9,855,063.16 = 3,878,164.08/x - Step 3: Cross multiply
7,141,372.20x = 9,855,063.16 × 3,878,164.08 - Step 4: Simplify right side
7,141,372.20x = 38,219,551,953,243.30 - Step 5: Solve for x
x = 38,219,551,953,243.30/7,141,372.20 - Step 6: Final answer
x = 5,351,849.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.